List of supportsSorting() Examples

Examples of supportsSorting()

org.geotools.data.QueryCapabilities.supportsSorting()
Returns whether a list of properties can be used as SortBy keys.
May include current feature type properties as well as "@id" for sorting on the Feature ID. Note, however, that ability to sort by the fature id does not necessarily implies the same ordering than SortBy.NATURAL_ORDER, though its probable they match for datastores where the feature id is built up from a primary key.

Returns true if passed a null or empty array, otherwise the actual attributes are checked. When the array is not null and not empty, by default returns false. FeatureSource implementations should override as needed.
@return whether the FeatureType this query capabilities refers to can be natively sorted bythe provided list of attribtue/order pairs

Examples of org.geotools.data.QueryCapabilities.supportsSorting()


        QueryCapabilities queryCapabilities = fs.getQueryCapabilities();
        assertFalse(queryCapabilities.isOffsetSupported());
        assertTrue(queryCapabilities.isReliableFIDSupported());


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { NATURAL_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { REVERSE_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        QueryCapabilities queryCapabilities = fs.getQueryCapabilities();
        assertFalse(queryCapabilities.isOffsetSupported());
        assertTrue(queryCapabilities.isReliableFIDSupported());


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { NATURAL_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { REVERSE_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        assertFalse(queryCapabilities.isOffsetSupported());
        assertTrue(queryCapabilities.isReliableFIDSupported());


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { NATURAL_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { REVERSE_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { NATURAL_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { REVERSE_ORDER }));
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        // no sorting on geometry columns!
        String geometryAttribute = fs.getSchema().getGeometryDescriptor().getLocalName();
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort(geometryAttribute,

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort("nonExistent",
                ASCENDING) }));


        // no sorting on geometry columns!
        String geometryAttribute = fs.getSchema().getGeometryDescriptor().getLocalName();
        assertFalse(queryCapabilities.supportsSorting(new SortBy[] { ff.sort(geometryAttribute,
                ASCENDING) }));


        SortBy[] supported = { ff.sort("INT32_COL", ASCENDING),//
                ff.sort("INT32_COL", DESCENDING),//
                ff.sort("INT16_COL", ASCENDING),//

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

                ff.sort("NSTRING_COL", ASCENDING),//
                ff.sort("NSTRING_COL", DESCENDING),//
                ff.sort("DATE_COL", ASCENDING),//
                ff.sort("DATE_COL", ASCENDING) };


        assertTrue(queryCapabilities.supportsSorting(supported));


    }


    @Test
    public void testFilterDateColumn() throws Exception {

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        SimpleFeatureSource featureSource = dataStore.getFeatureSource( typeName);
        
        QueryCapabilities caps = featureSource.getQueryCapabilities();
        
        SortBy[] sortBy = new SortBy[]{SortBy.NATURAL_ORDER,};
        assertTrue( "Natural", caps.supportsSorting( sortBy ));
        
        SimpleFeatureType schema = featureSource.getSchema();
        String attr = schema.getDescriptor(1).getLocalName();
        
        sortBy[0] = ff.sort( attr, SortOrder.ASCENDING );

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        
        SimpleFeatureType schema = featureSource.getSchema();
        String attr = schema.getDescriptor(1).getLocalName();
        
        sortBy[0] = ff.sort( attr, SortOrder.ASCENDING );
        assertTrue( "Sort "+attr, caps.supportsSorting( sortBy ));
        
        sortBy[0] = ff.sort( "the_geom", SortOrder.ASCENDING );
        assertFalse( "Cannot sort the_geom", caps.supportsSorting( sortBy ));
    }

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        
        sortBy[0] = ff.sort( attr, SortOrder.ASCENDING );
        assertTrue( "Sort "+attr, caps.supportsSorting( sortBy ));
        
        sortBy[0] = ff.sort( "the_geom", SortOrder.ASCENDING );
        assertFalse( "Cannot sort the_geom", caps.supportsSorting( sortBy ));
    }
    
    @Test
    public void testEnableIndexParameter() throws Exception {
        Map<String, Serializable> params;

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Examples of org.geotools.data.QueryCapabilities.supportsSorting()

        // can we support the required sorting?
        QueryCapabilities caps = source.getQueryCapabilities();
        if (query.getStartIndex() != null && !caps.isJoiningSupported()) {
            txQuery.setStartIndex(null);
        }
        if (query.getSortBy() != null && !caps.supportsSorting(query.getSortBy())) {
            txQuery.setSortBy(null);
        }


        // if the original query had sorting but we cannot pass it down we
        // have to remove offset and limit too

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